._zong div{
    float:left;


}
._zong{
    width:100%;
}
._top_1{
    width:100%;
    height:60px;
    padding:12px;
    background-image:url('../images/logoone.png');
    background-size:300px;
    background-repeat:no-repeat;
    background-position:12% 30%;
    letter-spacing:2px;
}
._top_2{
    width:100%;
    height:60px;
    background-color:rgb(70, 135, 170);
}
._top_2 ul{
    list-style:none;
    color:white;
    font-weight:bold;
    margin:0;
    padding:0;
    margin-left:10%;

}
._top_2 ul li{
    float:left;
    height:60px;
    padding:20px;
    cursor:pointer;
}
._top_2 ul li:hover{
    background-color:#5182BD;
}
._top_2_sel{
    float:left;
    width:400px;
    height:200px;
    margin-left:15%;
    margin-top:120px;
    position:absolute;
    z-index:999;
    background-color:white;
    display:none;

}
._top_2_sel_1{
    list-style:none;
    font-size:12px;
    width:130px;
    float:left;
    padding-left:0px;
}
._top_2_sel_1 li{
    cursor:pointer;
    padding:10px;
}
._top_2_sel_1 li:hover{
    background-color:#5182BD;
    color:white;
}
#_top_2_wdcl_content{
    margin-left:22%;
}








._center{
    min-height:600px;
    width:100%;

}
._center_1{
    margin-top:10px;
    width:80%;
    margin-left:10%;
    height:50px;
    background-color:#F0F8FF;
    text-align:center;
    padding:15px;
    color:#4682B4;
    font-weight:bold;
    letter-spacing:2px;
}
._center_2{
    margin-left:10%;
    float:left;
    margin-top:10px;
    width:80%;
}
._center_2 ul{
    list-style:none;
    padding-left:0px;
    float:left;
    width:100%

}
._center_2 ul li{
    background-color:#E8F0F2;
    float:left;
    height:160px;
    width:145px;
    margin-left:3px;
    margin-top:3px;
    color:#5B5B5B;
    cursor:pointer;
    padding-top: 110px;
    text-align: center;
    letter-spacing:1px;
}
._center_2 ul li:hover{
    box-shadow: 0px 0px 2px 2px #FFA500 ;
}
._center_2_pdftoword{
    background-image:url('../images/pdftoword.png');
    background-size:100px;
    background-repeat:no-repeat;
    background-position:50% 30%;
}
._center_2_pdftohtml{
    background-image:url('../images/html.png');
    background-size:50px;
    background-repeat:no-repeat;
    background-position:50% 30%;
}
._center_2_pdftotxt{
    background-image:url('../images/txt1.png');
    background-size:50px;
    background-repeat:no-repeat;
    background-position:50% 30%;
}
._center_2_pdftoppt{
    background-image:url('../images/ppt.png');
    background-size:50px;
    background-repeat:no-repeat;
    background-position:50% 30%;
}
._center_2_pdfyasuo{
    background-image:url('../images/pdf2.png');
    background-size:50px;
    background-repeat:no-repeat;
    background-position:50% 30%;
}
._center_2_wordyasuo{
    background-image:url('../images/word1.png');
    background-size:50px;
    background-repeat:no-repeat;
    background-position:50% 30%;
}









